Among the xylenes, which is thermodynamically most stable ?

Options

A.
B.
C.
D. All are equally stable

Explanation

To determine which xylene is thermodynamically most stable among ortho, meta, and para xylenes, we can follow these steps:

### Step 1: Identify the Structures of Xylenes
- Ortho xylene has two methyl groups attached to adjacent carbon atoms on the benzene ring.
- Meta xylene has two methyl groups attached to carbon atoms that are separated by one carbon atom on the benzene ring.
- Para xylene has two methyl groups attached to carbon atoms that are opposite each other on the benzene ring.

### Step 2: Understand the Directing Effects of Methyl Groups
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